Question

area of the square is 81 what is the length and breadth

Answer 1

area of square= l*b (where l=b)

and area is given 81

therefore,

l*b=81

l*l=81

l square=81

=> l=9

where l= side of the square=9

Answer 2

First of all I want inform you that in case of a square the breath and length are always equal
.
so
side of the square=》
${a }^{2} = 81 \\ a = \sqrt{81 \: = 9}$